I'm a LLL leader, I would suggest some warm/hot packs and/or hot showers, pumping just minimally with either a hand pump or even hand expression to help relieve some of the pain and try to get the plug out. Also you could try the cabbage leaf trick, like we recommend for new moms who are engorged to see if it would help. I've always seen the best luck with hand expression, warm packs, and breast massage (from nipple to armpit). Good luck, and congrats for breastfeeding your LO for such a long time!